gncpy.math.rk4

rk4(f, x, h, **kwargs)

Implements a classic Runge-Kutta integration RK4.

Parameters:

• f (callable) – function to integrate, must take x as the first argument and arbitrary kwargs after

• x (numpy array, or float) – state needed by function

• h (float) – step size

Returns:

state – Integrated state

Return type:

numpy array, or float